She reasoned that a decision upholding the law would require the support of Justice Anthony Kennedy, a moderate conservative who often controls the outcome of the court’s rulings since the justices frequently are split in their decisions.

‘If you get Kennedy, I don’t think that Roberts would want it to look political’ and oppose it, Pelosi said, alluding to the fact that Roberts has said he favors unanimity on his court.

As a Democratic senator from Illinois in 2005, Obama opposed Republican President George W. Bush’s nomination of Roberts to the Supreme Court.

In 2010, the same year the president got his healthcare law through Congress, Obama ripped into the Roberts court for a ruling that allowed corporations to spend unlimited money in elections.

This week the court again drew the wrath of the White House – as well as Pelosi and other Democrats in Congress – by reaffirming its 2010 decision by rejecting Montana’s century-old ban on businesses engaging in political spending.

Pelosi voiced confidence that the healthcare law she helped draft will meet any constitutional test. ‘It is ironclad. We didn’t do this off the back of our hand,’ she said.

‘We believe in judicial review in everything that we do. I wrote a bill that would withstand any question of its conditionality.’